全文获取类型
收费全文 | 335篇 |
免费 | 3篇 |
国内免费 | 3篇 |
专业分类
安全科学 | 4篇 |
废物处理 | 18篇 |
环保管理 | 19篇 |
综合类 | 38篇 |
基础理论 | 71篇 |
污染及防治 | 121篇 |
评价与监测 | 30篇 |
社会与环境 | 37篇 |
灾害及防治 | 3篇 |
出版年
2023年 | 4篇 |
2022年 | 8篇 |
2021年 | 14篇 |
2020年 | 4篇 |
2019年 | 9篇 |
2018年 | 11篇 |
2017年 | 10篇 |
2016年 | 17篇 |
2015年 | 12篇 |
2014年 | 22篇 |
2013年 | 39篇 |
2012年 | 31篇 |
2011年 | 29篇 |
2010年 | 11篇 |
2009年 | 17篇 |
2008年 | 25篇 |
2007年 | 25篇 |
2006年 | 14篇 |
2005年 | 7篇 |
2004年 | 8篇 |
2003年 | 5篇 |
2002年 | 6篇 |
2001年 | 2篇 |
2000年 | 3篇 |
1999年 | 1篇 |
1998年 | 1篇 |
1997年 | 1篇 |
1995年 | 2篇 |
1991年 | 1篇 |
1990年 | 1篇 |
1957年 | 1篇 |
排序方式: 共有341条查询结果,搜索用时 15 毫秒
111.
Joan Navarro Lourdes López Marta Coll Claudio Barría Raquel Sáez-Liante 《Marine Biology》2014,161(7):1697-1707
Knowing the trophic ecology of marine predators is essential to develop an understanding of their ecological role in ecosystems. Research conducted on deep-sea and threatened shark species is limited. Here, by combining analyses of individual stomach contents and stable isotope values, we examined the trophic ecology (dietary composition and trophic position) of the kitefin shark Dalatias licha, a deep-sea shark considered as near threatened globally and as data deficient in the Mediterranean Sea. Results revealed the importance of small sharks in the diet of the kitefin shark at short- and long-term scales, although fin-fish, crustaceans and cephalopods were also found. Predation on sharks reveals the high trophic position of the kitefin shark within the food web of the western Mediterranean Sea. Stable isotope values from liver and muscle tissues confirmed our results from stomach content analysis and the high trophic position. 相似文献
112.
Abreu Murilo S. Kulczykowska Ewa Cardoso Sónia C. André Gonçalo I. Morais Marta Gozdowska Magdalena Soares Marta C. 《Behavioral ecology and sociobiology》2018,72(7):1-14
Behavioral Ecology and Sociobiology - A growing body of research suggests that songs are an important part of the courtship behavior of many bat species, however there is little information on the... 相似文献
113.
Phosphorus (P) fertilizer is essential for food production and is a limiting factor in crop yields. However, the role of P in the eutrophication of surface water has long been recognised. During recent years, the input of P from agriculture to surface waters has increased and has been the focus for strategies aimed at mitigating diffuse P losses. As not all forms of P have the same availability, it is important to know the main forms of phosphorus in biowastes, and hence to develop fractionation schemes. The standards, measurements, and testing (SMT) procedure for phosphorus fractionation in freshwater sediments, developed within the framework of the Standards, Measurements, and Testing Program of the European Commission, was applied to 15 biowastes used frequently in agriculture, to obtain total P, inorganic and organic P, apatite P, and non-apatite inorganic P. The Hedley method was applied to determine the water-soluble phosphorus (WSP) in all the biowastes. In addition, the aluminium, calcium, and iron concentrations were quantified and related to the WSP. The results confirm the applicability of the SMT protocol to all kinds of waste usually applied in agriculture. The SMT protocol revealed the existence of large amounts of inorganic P and non-apatite inorganic P, the most-available forms of P for all the biowastes. The comparison of the data for total P (SMT protocol) and WSP (Huang protocol) does not show a good linear relationship between these parameters. Instead, the relationship between [aluminium+calcium+iron] and WSP is a better indication of the availability of P. 相似文献
114.
Targeting arsenic-safe aquifers for drinking water supplies 总被引:1,自引:0,他引:1
Jochen Bundschuh Marta I. Litter Prosun Bhattacharya 《Environmental geochemistry and health》2010,32(4):307-315
At present, 70 countries worldwide are affected by groundwater contamination by arsenic (As) released from predominantly geogenic
sources. Consequently, the As problem is becoming a global issue. The option to target As-safe aquifers, which uses geological,
geochemical, hydrogeological, morphological and climatic similarities to delimit As-safe aquifers, appears as a sustainable
mitigation option. Two pilot areas, Meghna Flood Plain in Matlab Upazila, representative of Bengal Delta in Bangladesh, and
Río Dulce Alluvial Cone, representing a typical aquifer setting in the Chaco-Pampean Plain in Argentina groundwater As occurrence,
were compared. In rural Bangladesh, As removal techniques have been provided to the population, but with low social acceptance.
In contrast, “targeting As-safe aquifers” was socially accepted in Bangladesh, where sediment color could be used to identify
As-safe aquifer zones and to install safe wells. The investigation in Argentina is more complex because of very different
conditions and sources of As. Targeting As-safe aquifers could be a sustainable option for many rural areas and isolated peri-urban
areas. 相似文献
115.
Ivon Cuadros-Casanova Andrea Cristiano Dino Biancolini Marta Cimatti Andrea Antonio Sessa Valeria Yeraldin Mendez Angarita Chiara Dragonetti Michela Pacifici Carlo Rondinini Moreno Di Marco 《Conservation biology》2023,37(3):e14052
The Common Agricultural Policy (CAP) is the European Union's main instrument for agricultural planning, with a new reform approved for 2023–2027. The CAP intends to align with the European Green Deal (EGD), a set of policy initiatives underpinning sustainable development and climate neutrality in the European Union (EU), but several flaws cast doubts about the compatibility of the objectives of these 2 policies. We reviewed recent literature on the potential of CAP environmental objectives for integration with the EGD: protection of biodiversity, climate change mitigation and adaptation, and sustainable management of natural resources. The CAP lacks appropriate planning measures, furthering instead risks to biodiversity and ecosystem services driven by landscape and biotic homogenization. Funding allocation mechanisms are not tailored to mitigate agricultural emissions, decreasing the efficiency of climate mitigation actions. The legislation subsidies farmers making extensive use of synthetic inputs without adequately supporting organic production, hindering the transition toward sustainable practices. We recommend proper control mechanisms be introduced in CAP Strategic Plans from each member state to ensure the EU is set on a sustainable production and consumption path. These include proportional assignment of funds to each CAP objective, quantitative targets to set goals and evidence-based interventions, and relevant indicators to facilitate effective monitoring of environmental performance. Both the CAP and the EGD should maintain ambitious environmental commitments in the face of crisis to avoid further degradation of the natural resources on which production systems stand. 相似文献
116.
Marta Gangolells Author Vitae Miquel Casals Author VitaeAuthor Vitae Xavier Roca Author VitaeAuthor Vitae 《Journal of Safety Research》2010,41(2):107-122
Introduction
Research and practice have demonstrated that decisions made prior to work at construction sites can influence construction worker safety. However, it has also been argued that most architects and design engineers possess neither the knowledge of construction safety nor the knowledge of construction processes necessary to effectively perform Construction Hazards Prevention through Design (CHPtD).Method
This paper introduces a quantitative methodology that supports designers by providing a way to evaluate the safety-related performance of residential construction designs using a risk analysis-based approach. The methodology compares the overall safety risk level of various construction designs and ranks the significance of the various safety risks of each of these designs. The methodology also compares the absolute importance of a particular safety risk in various construction designs.Results
Because the methodology identifies the relevance of each safety risk at a particular site prior to the construction stage, significant risks are highlighted in advance. Thus, a range of measures for mitigating safety risks can then be implemented during on-site construction.Impact on industry
The methodology is specially worthwhile for designers, who can compare construction techniques and systems during the design phase and determine the corresponding level of safety risk without their creative talents being restricted. By using this methodology, construction companies can improve their on-site safety performance. 相似文献117.
Marta Lisli Giannichi Yoni Gavish Timothy R. Baker Martin Dallimer Guy Ziv 《Conservation biology》2020,34(1):148-157
Offset schemes help avoid or revert habitat loss through protection of existing habitat (avoided deforestation), through the restoration of degraded areas (natural regrowth), or both. The spatial scale of an offset scheme may influence which of these 2 outcomes is favored and is an important aspect of the scheme's design. However, how spatial scale influences the trade-offs between the preservation of existing habitat and restoration of degraded areas is poorly understood. We used the largest forest offset scheme in the world, which is part of the Brazilian Forest Code, to explore how implementation at different spatial scales may affect the outcome in terms of the area of avoided deforestation and area of regrowth. We employed a numerical simulation of trade between buyers (i.e., those who need to offset past deforestation) and sellers (i.e., landowners with exceeding native vegetation) in the Brazilian Amazon to estimate potential avoided deforestation and regrowth at different spatial scales of implementation. Allowing offsets over large spatial scales led to an area of avoided deforestation 12 times greater than regrowth, whereas restricting offsets to small spatial scales led to an area of regrowth twice as large as avoided deforestation. The greatest total area (avoided deforestation and regrowth combined) was conserved when the spatial scale of the scheme was small, especially in locations that were highly deforested. To maximize conservation gains from avoided deforestation and regrowth, the design of the Brazilian forest-offset scheme should focus on restricting the spatial scale in which offsets occur. Such a strategy could help ensure conservation benefits are localized and promote the recovery of degraded areas in the most threatened forest landscapes. 相似文献
118.
Sánchez B Sánchez-Muñoz M Muñoz-Vicente M Cobas G Portela R Suárez S González AE Rodríguez N Amils R 《Chemosphere》2012,87(6):625-630
The photocatalytic elimination of microorganisms from indoor air in realistic conditions and the feasibility of simultaneous elimination of chemical contaminants have been studied at laboratory scale. Transparent polymeric monoliths have been coated with sol-gel TiO(2) films and used as photocatalyst to treat real indoor air in a laboratory-scale single-step annular photocatalytic reactor. The analytical techniques used to characterize the air quality and analyze the results of the photocatalytic tests were: colony counting, microscopy and PCR with subsequent sequencing for microbial quantification and identification; automated thermal desorption coupled to gas chromatography with mass spectrometry detection for chemical analysis. The first experiments performed proved that photocatalysis based on UVA-irradiated TiO(2) for the reduction of the concentration of bacteria in the air could compete with the conventional photolytic treatment with UVC radiation, more expensive and hazardous. Simultaneously to the disinfection, the concentration of volatile organic compounds was greatly reduced, which adds value to this technology for real applications. The fungal colony number was not apparently modified. 相似文献
119.
120.
Ocampo-Duque W Juraske R Kumar V Nadal M Domingo JL Schuhmacher M 《Environmental science and pollution research international》2012,19(4):983-999